Which of the following is the best example of proper hypothesis? a. i think there is no effect on hearing if you listen to loud music only 3 hours a day. b. children who wear backpacks do better academically. c. orange popsicle taste sweeter than grape popsicles. d. if two object are dropped at the same height ,the heavier objectwill got first.

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?